define(function (require, exports, module) {
    accessid = ''
    accesskey = ''
    host = ''
    policyBase64 = ''
    signature = ''
    callbackbody = ''
    filename = ''
    key = ''
    expire = 0
    g_object_name = ''
    g_object_name_type = ''
    now = timestamp = Date.parse(new Date()) / 1000;

    function send_request() {
        var xmlhttp = null;
        if (window.XMLHttpRequest) {
            xmlhttp = new XMLHttpRequest();
        }
        else if (window.ActiveXObject) {
            xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }

        if (xmlhttp != null) {
            phpUrl = './php/get.php'
            xmlhttp.open("GET", phpUrl, false);
            xmlhttp.send(null);
            return xmlhttp.responseText
        }
        else {
            alert("Your browser does not support XMLHTTP.");
        }
    };

    function check_object_radio() {
        var tt = document.getElementsByName('myradio');
        for (var i = 0; i < tt.length; i++) {
            if (tt[i].checked) {
                g_object_name_type = tt[i].value;
                break;
            }
        }
    }

    function get_signature() {
        //可以判断当前expire是否超过了当前时间,如果超过了当前时间,就重新取一下.3s 做为缓冲
        now = timestamp = Date.parse(new Date()) / 1000;
        if (expire < now + 3) {
            body = send_request()
            var obj = eval("(" + body + ")");
            host = obj['host']
            policyBase64 = obj['policy']
            accessid = obj['accessid']
            signature = obj['signature']
            expire = parseInt(obj['expire'])
            callbackbody = obj['callback']
            key = obj['dir']
            return true;
        }
        return false;
    };

    function random_string(len) {
        len = len || 32;
        var chars = 'ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';
        var maxPos = chars.length;
        var pwd = '';
        for (i = 0; i < len; i++) {
            pwd += chars.charAt(Math.floor(Math.random() * maxPos));
        }
        return pwd;
    }

    function get_suffix(filename) {
        pos = filename.lastIndexOf('.')
        suffix = ''
        if (pos != -1) {
            suffix = filename.substring(pos)
        }
        return suffix;
    }

    function calculate_object_name(filename) {
        if (g_object_name_type == 'local_name') {
            g_object_name += "${filename}"
        }
        else if (g_object_name_type == 'random_name') {
            suffix = get_suffix(filename)
            g_object_name = key + random_string(10) + suffix
        }
        return ''
    }

    function get_uploaded_object_name(filename) {
        if (g_object_name_type == 'local_name') {
            tmp_name = g_object_name
            tmp_name = tmp_name.replace("${filename}", filename);
            return tmp_name
        }
        else if (g_object_name_type == 'random_name') {
            return g_object_name
        }
    }

    function set_upload_param(up, filename, ret) {
        if (ret == false) {
            ret = get_signature()
        }
        g_object_name = key;
        if (filename != '') {
            suffix = get_suffix(filename)
            calculate_object_name(filename)
        }
        new_multipart_params = {
            'key': g_object_name,
            'policy': policyBase64,
            'OSSAccessKeyId': accessid,
            'success_action_status': '200', //让服务端返回200,不然，默认会返回204
            'callback': callbackbody,
            'signature': signature,
        };

        up.setOption({
            'url': host,
            'multipart_params': new_multipart_params
        });

        up.start();
    }

    var uploader = new plupload.Uploader({
        runtimes: 'html5,flash,silverlight,html4',
        browse_button: 'p-submit',
        //multi_selection: false,
        container: document.body,
        flash_swf_url: '../util/plupload-2.1.2/js/Moxie.swf',
        silverlight_xap_url: '../util/plupload-2.1.2/js/Moxie.xap',
        url: 'http://oss.aliyuncs.com',

        init: {
            PostInit: function () {
                console.log('初始化')
            },

            FilesAdded: function (up, files) {
                console.log(files)
                plupload.each(files, function (file) {
                    document.getElementById('ossfile').innerHTML += '<div id="' + file.id + '">' + file.name + ' (' + plupload.formatSize(file.size) + ')<b></b>'
                        + '<div class="progress"><div class="progress-bar" style="width: 0%"></div></div>'
                        + '</div>';
                });
            },

            BeforeUpload: function (up, file) {
                check_object_radio();
                set_upload_param(up, file.name, true);
            },

            UploadProgress: function (up, file) {
                var d = document.getElementById(file.id);
                d.getElementsByTagName('b')[0].innerHTML = '<span>' + file.percent + "%</span>";
                var prog = d.getElementsByTagName('div')[0];
                var progBar = prog.getElementsByTagName('div')[0]
                progBar.style.width = 2 * file.percent + 'px';
                progBar.setAttribute('aria-valuenow', file.percent);
            },

            FileUploaded: function (up, file, info) {
                if (info.status == 200) {
                    document.getElementById(file.id).getElementsByTagName('b')[0].innerHTML = 'upload to oss success, object name:' + get_uploaded_object_name(file.name);
                }
                else {
                    document.getElementById(file.id).getElementsByTagName('b')[0].innerHTML = info.response;
                }
            },

            Error: function (up, err) {
                document.getElementById('console').appendChild(document.createTextNode("\nError xml:" + err.response));
            }
        }
    });

    uploader.init();

})